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Re: Engine vacuum leak?

Phil Payne wrote:

>> A recent post by STEADIRIC suggests that if engine runs when dipstick is
>> pulled this may indicate a vacuum leak.
>> I have two cars with the same engine...5 cylinder NF.
>> The 87 5KS will continue running when the oil filler cap is removed.

My 200 stumbles/runs rough on the dipstick test and dies on the oil filler 
cap test. Do you think I have a leak? It runs very strong otherwise. 

>There's a vacuum leak _AND_ the fuel injection was set up with the
>breathers still attached.

What breathers? Could you elaborate, please...

>Air bypassing the mass sensor has been automatically compensated for 
>during the idle richness adjustment.  Adding more air via the dipstick 
>hole doesn't make a great deal of difference - the engine will stumble, 
>but the idle stabilisation will keep it running.

>> The 89 100 dies immediately when the cap is removed.
>No vacuum leaks.  The fuel mixture is set correctly, and adding air via the
>dipstick hole makes, in percentage terms, a much greater difference.


Igor Kessel
the sweetheart: 200TQ, chipped and MOMO'd through out,
in Tornado "arrest-me-officer" Red;
the ex: 5000s, the EE's nightmare
Phila PA, USA